/*
 * Copyright 2023 Sweden Connect
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package se.swedenconnect.ca.service.base.configuration.audit;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import se.swedenconnect.ca.service.base.configuration.properties.SyslogConfigProperties;

/**
 * Syslog message sender bean configuration.
 */
@Configuration
public class SyslogConfig {

  private static final Logger log = LoggerFactory.getLogger(SyslogConfig.class);

  @Bean(name = "syslogMessageSender")
  List<ExtSyslogMessageSender> syslogMessageSenderList(final SyslogConfigProperties syslogConfigProperties) {
    final List<SyslogConfigProperties.SyslogConfigData> syslogConfigList = syslogConfigProperties.getConfig();
    if (!syslogConfigProperties.isEnabled()) {
      log.info("No syslog server is configured. Logging to in memory audit log");
      return new ArrayList<>();
    }
    if (syslogConfigList.isEmpty()) {
      throw new IllegalArgumentException("Syslog is configured, but no valid syslog configuration data is available");
    }

    return syslogConfigList.stream()
        .map(ExtSyslogMessageSender::new)
        .collect(Collectors.toList());
  }

}
